Wilsonville (OR) Climate by Month
The climate in Wilsonville is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to cold in the cooler months.
It also experiences much rain/snowfall throughout the year.
Now, let’s explore all the climate details to give you a full picture.
Average day and night temperature
In Wilsonville, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 28°C in August. In December, the coolest month of the year, temperatures drop to a chilly 8°C. At night, expect cooler temperatures, averaging 2°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Wilsonville experiences significant rain/snowfall throughout the year, averaging 1090 mm of precipitation annually. Wilsonville can be quite wet during December, receiving approximately 181 mm of precipitation over 20 rainy days. In contrast August, experiences much drier conditions, with 10 mm of rainfall, spread across 3 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Wilsonville can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.1 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is moderate throughout the year in Wilsonville.
Relative humidity over the year
The best time of year to visit Wilsonville in the United States of America
During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Most rainfall (rainy season) is seen in January, November and December.
Yes, the months of July and August are very dry.
August has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 8°C.
December tops the wettest month list with 181 mm of rainfall.
August is the driest month with 10 mm of precipitation.
July is the sunniest month with an average of 332 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
